From 20 December 1942 to 4 March 1943 Constant escorted
convoys between San Francisco and Pearl Harbor. She sailed from Pearl
Harbor 8 March for Espiritu Santo, arriving 25 March for local escort
duty, operating from Espiritu Santo and Noumea in support of the
Guadalcanal operation. On 3 September 1943 she arrived at Tulagi and
remained in the Solomons on interisland escort and minesweeping duty
with occasional convoy voyages to Noumea and Espiritu Santo until 3
April 1944 when she steamed to Auckland, New Zealand, for a brief
overhaul. She returned to Port Purvis in the Solomons 13 May. On 1
June 1944 her name was canceled and she was reclassified PC-1590. She
continued her service at Espiritu Santo, Noumea, Samoa and Tongatabu
until 6 May 1946 when she returned to Pearl Harbor, where she was
decommissioned 19 June 1946.

Assigned to the 14th Naval District for Naval Reserve training 28
October 1946, PC 1590 was placed in commission in reserve 5 May 1950,
and in full commission from 20 March 1951 until decommissioned 22
October 1954. She was sunk as a target.